Gray lron灰铸铁
Standard-Spec.No.&Class标准 T.S.
σb≥
N/mm2		 Hardness HB≤

Note:(1)Test Bar θ=30mm(2)Chemieal composition and other requirement can be established upon written agreement between manufacturer and purchaser.(3)The hardness values are for castings of 15~30mm thickness.
注：(1)试棒直径=30mm;(2)化学成分和其它要求可与客户商定；(3)硬度值适用于15-30mm壁厚铸件
GB
China/ISO		 JIS
JAPAN		 ASTM
U.S.A.
HT200/200 FC200 CI.30 200 223
HT250-250 FC250 CI.35 250 241
HT300/300 FC300 CI.40 300 262
HT350/350 FC350 CI.50 350 277
 
Ductile lron球墨铸铁
Standard-Spec.No&Class标准 T.S.
σb≥
N/mm2		 Y.S.
σs
≥%		 EL
σ≥		 For Reference(供参考)

Note:
(1)Separately cast
test bars machined
to φ14mm from 25mm
keel blocks;
(2)Same as above
note(2)
注：(1)单铸试块将25MM基尔试块加工到直径为 φ14mm(2)与上表中(2)相同

 
GB
China		 JIS
Japan		 ASTM
A536
U.S.A.		 Hardness HB Micor-structure
(基体)
QT400-18 FCD400-18 60-40-18 400 250 18 130-180 Ferrite(F)
铁素体
QT450-10 FCD450-10   450 310 10 160-210 (F)铁
QT500-7 FCD500-7 65-45-12 500 320 7 170-230 (F)+Pearlite(P)
铁+珠光体
QT600-3 FCD600-3 80-55-06 600 370 3 190-270 (P)+(F)
珠+铁
QT700-2 FCD700-2 100-70-03 700 480 2 225-305 (P)珠
QT800-2 FCD800-2 100-70-03 800 480 3 245-335 (P)or tempered structure
(珠)
 
Alloy Cast lron for Special Use特殊合金铸铁
Standard-Spec.No.标准 Chemical Composition%(化学成分) Mechanical properties Micro-Structure
(as cast)
铸态基体
GB
China		 JIS
Japan		 ASTM
U.S.A.		 C Mn Si Cr Others
(其它)		 T.S.
σb
N/mm2		 Hardness
Heat-Resistant Ductile lron耐热球铁 (Heat-Resistant Temp.750-900℃耐热温度)
RQTSI-5     2.4-3.2 ≤0.7 4.5-5.5   Mg0.035-0.065 RE0.015-0.04 ≥370 HB
228-302		 (F)铁
Wear-Resistant Cast lron 耐磨铸铁
KmTBCr15Mo2-GT   A532IIC 2.8-3.5 0.5-1.0 ≤1.0 13.0-18.0 Mo0.5-3.0,Ni0-1.0 Cu0-1.2   HRC50-58 (M,A)
马氏体，奥氏体
KmTBCr26   A532IIIA 2.3-3.0 0.5-1.0 ≤1.0 23.0-28.0 Mo 0-1.0,Ni 0-1.5 Cu 0-2.0   HRC50-58 (M)马
Corrosion-Resistant Cast lron耐蚀铸铁
STSi15 R     ≤1.0 ≤0.5 14.25-15.75   RE<0.1   HRC≤48 (F)铁
 
Plain Carbon Cast Steel碳素铸钢
Standard-Spec.No.& Grade 标准 Chemical Composition≤% Mechanical Properties≥

NOTE:(1)S,P≤0.04%(2)C,Mn%can also be agreed upon by manufacturer and purchaser.(3)Heat Treat:Normalize(N)+Temper(T) or Quench(Q)+T,selected by Foundry
注：(1)S，P含量≤0.04%(2)C,Mn含量由供需双方商定(3)热处理由厂方选择：N(正火)+T(回火)或Q(淬火)+T(回火)
GB
China		 JIS
Japan		 ASTM
U.S.A.		 C Si Mn T.S.
σb
N/mm2		 Y.S.
σs
N/mm2		 EL
σ%		 R.A.
ψ%
ZG200-400 SC420 A27 60-30 0.2 0.5 0.8 400 200 25 40
ZG230-450 SC450 65-35 0.3 0.9 450 230 22 32
ZG270-500 SC480 70-40 0.4 500 270 18 25
ZG340-640 SCC3B A148 80-50 0.6 0.6 640 240 10 18
 
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